I also can't recommend highly enough Firefox on Android, particularly with uBlock Origin and the "Dark Background and Light Text" addon (currently at version 0.6.8 for ease of finding). For HN you'll want to use the "Simple CSS" dark setting instead of the default - that keeps the arrows, but you do lose the greying-out of downvoted comments.
Edit: I also think it's interesting how much Chrome now minimizes and almost hides the Chrome App Store to add new extensions. It's almost as if it's not making Google any money and people keep installing adblockers through it.